Abstract
We compute the number of order-preserving and -reversing maps between posets in the class of fences (zig-zags) and crowns (cycles).
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Communicated by A. Rutkowski
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Farley, J.D. The number of order-preserving maps between fences and crowns. Order 12, 5–44 (1995). https://doi.org/10.1007/BF01108588
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DOI: https://doi.org/10.1007/BF01108588